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GMC-I Messtechnik GmbH
9
check again at another power outlet. If
the device works at the second outlet,
arrange to have the first outlet checked
by a qualified electrician.
–
When used in IT networks, and if the test
instrument is connected via an isolating
transformer, there’s no PE connection:
“PE > 30 V!!” appears at the display.
6.1
Connection Display
Available line voltage and the quality of the N
and PE conductor connections are dis-
played in the first “Connection” menu.
The finger contact LED can be checked for
correct functioning by touching the finger
contact with the probe during the
“I
EA
LN-Probe” single measurement. The
LED must blink.
6.2
Single-Phase Mains Connection
Attention!
!
If voltage L1 is less than 207 V or
greater than 253 V (L1 < 207 V or
L1 > 253 V), reliable and meaningful
measurements are no longer possi-
ble.
If “PE > 30V!!” appears and the dis-
play, the protective conductor is
most likely interrupted or, under cer-
tain circumstances, interference volt-
age may also be present at the
protective conductor (check via fin-
ger contact: respective LED must not
blink). Refer to section 6 with regard
to testing the protective conductor.
7
Display and Menu Structure
User prompting, measuring functions, limit
values and measured values appear conve-
niently at the display.
8
Initial Startup of the Test
Instrument
8.1
Visual Inspection
•
Observe the safety precautions in sec-
tion 1.
•
Visually inspect the mains connection,
the test instrument and any measuring
accessories.
•
Observe the warnings on the test instru-
ment, the mains adapter cable and the
measuring accessories.
8.2
Mains Connection
The test Instrument is supplied with power
via the mains connection on the top of the
instrument.
8.3
Selecting and Starting a Test
The single tests (measurement type) are
accessed via the direct selection keys (9). A
menu for selecting the type of connection
appears. The corresponding start menu is
displayed after acknowledging with
OK
, and
the measurement is started at the same
time.
Depending on the type of measurement and
connection, the measured value is com-
pared with the limit value according to the
standard. If the standard value is complied
with,
OK
appears at the display and the
LED lights up green.
You can repeat the measurement by press-
ing the
scroll key (reset), after which the
LED
goes out.